Question 1144018
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Two cars leave towns 800 kilometers apart at the same time and travel toward each other. One cars rate is 10 kilometers per hour less than the others . If they meet 5 hours what is the rate of the slower car?
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Two cars leave towns D kilometers apart at the same time and travel toward each other. One cars rate is k kilometers per hour less than the others . If they meet t hours what is the rate of the slower car?
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The two speeds are r and r+k.
r+k is the faster car speed, and r is the slow car speed.


The two cars moving toward each other are consuming the D distance until they meet.


{{{(r+r+k)*t=D}}}
{{{2r+k=D/t}}}

{{{2r=D/t-k}}}

{{{highlight(r=(1/2)(D/t-k))}}}
Simplify this if you want.  Substitute the given values at any time.